Integrated multi-user detection method and system based on signal virtual processing

A technology of multi-user detection and virtual processing, applied in the field of integrated multi-user detection based on signal virtual processing, which can solve problems such as SIC error propagation

Active Publication Date: 2021-01-12
XIDIAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, SIC has an error propagation problem

Method used

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  • Integrated multi-user detection method and system based on signal virtual processing
  • Integrated multi-user detection method and system based on signal virtual processing
  • Integrated multi-user detection method and system based on signal virtual processing

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Embodiment Construction

[0039] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0040] For the receiver, the signal processing capability brought by the increase in the number of receiving antennas is helpful for multi-user detection. However, having too many receive antennas is impractical due to space constraints and hardware cost. Therefore, multi-user detection with a limited number of receiving antennas has important research significance. Z.Li, X.Dai, and K.G.Shin, “Decoding interfering signals with fewer receiving antennas,” in Proc.IEEEINFOCOM, San Francisco, CA, USA, Apr.2016, pp.1-9. function, a multi-user detection scheme ICom / SIC-ZF based on Interference Combination (Interference Combination, ...

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Abstract

The invention discloses an integrated multi-user detection method and system based on signal virtual processing, wherein the method comprises the steps: calculating the channel ambiguity by a common receiver according to the channel state information corresponding to a transmitter of a to-be-detected signal and the modulation mode of the transmitter, and carrying out the descending sort of the channel ambiguity; if the maximum ambiguity of the channel is not zero, detecting the to-be-detected signal which does not exceed the number of antennas of a receiver in a zero-forcing mode, and eliminating the detected signal from the received mixed signal; if the maximum ambiguity of the channel is zero, enabling all the signals to be detected to be equivalent to a structured equivalent signal, then determining a symbol combination possibly carried by the signals to be detected, recovering a data symbol carried by the signals sent by the transmitter with the maximum channel gain in a zero forcing mode, and taking the data symbol as a reference symbol; and determining a symbol combination carried by the signals to be detected. Therefore, multi-user detection is realized by using a small number of antennas, and the detection efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of communication, and further mainly relates to an integrated multi-user detection method and system based on signal virtual processing, which can be used in an uplink communication system. Background technique [0002] In recent years, the continuous growth of wireless broadband services has led to the rapid development of 5G technology. Compared with 4G, 5G needs to support higher capacity, faster data rate and more reliable transmission. With the rapid development of the Internet of Things, it is estimated that by 2021, there will be about 41.6 billion connected devices in the world. A large number of network devices have put forward higher requirements on the capacity of the communication system, and supporting more users online at the same time has become an urgent problem to be solved. [0003] Allocating different communication resources to each user participating in communication can support multi-...

Claims

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Application Information

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IPC IPC(8): H04B7/0452H04B17/309H04B17/391
CPCH04B7/0452H04B17/309H04B17/3912
Inventor 李钊彭博博丁汉清肖丽媛
Owner XIDIAN UNIV
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